You can press ctrl+e to copy the selected text into the find panel, or set the option find.useSelectedText to true (via Preferences/General Preferences) to have it happen automatically when you open the panel.

ctrl+e = copy word under cursor in find textfieldctrl+shift+e = copy word under cursor in replace textfieldThese 2 above wont open the find/replace panel so do ctrl+f (for find only) or ctrl+h (for find&replace) you will see the words there.

I have find prev/next under cursor mapped to alt-Up and alt-down. This makes it easy to see where a identifier is used in the code, being able to do this is actually a make or break feature for any editor i use.